SciPost Physics

SciPost Phys. 6, 021 (2019) · published 8 February 2019

• doi: 10.21468/SciPostPhys.6.2.021
• pdf
• BiBTeX
• RIS
• Submissions/Reports
• 

Abstract

We design and explore a shortcut to adiabaticity (STA) for changing the interaction strength between two ultracold, harmonically trapped bosons. Starting from initially uncorrelated, non-interacting particles, we assume a time-dependent tuning of the inter-particle interaction through a Feshbach resonance, such that the two particles are strongly interacting at the end of the driving. The efficiency of the STA is then quantified by examining the thermodynamic properties of the system, such as the irreversible work, which is related to the out-of-equilibrium excitations in the system. We also quantify the entanglement of the two-particle state through the von Neumann entropy and show that the entanglement produced in the STA process matches that of the desired target state. Given the fundamental nature of the two-atom problem in ultracold atomic physics, the presented shortcut can be expected to have significant impact on many processes that rely on inter-particle interactions.

• Pęcak et al., Intercomponent correlations in attractive one-dimensional mass-imbalanced few-body mixtures
  Phys. Rev. A 99, 043612 (2019) [Crossref]
• Keller et al., Feshbach engine in the Thomas-Fermi regime
  Phys. Rev. Research 2, 033335 (2020) [Crossref]
• Mistakidis et al., Few-body Bose gases in low dimensions—A laboratory for quantum dynamics
  Physics Reports 1042, 1 (2023) [Crossref]
• Kahan et al., Driving Interactions Efficiently in a Composite Few-Body System
  Universe 5, 207 (2019) [Crossref]
• Stefanatos et al., Efficient generation of the triplet Bell state between coupled spins using transitionless quantum driving and optimal control
  Phys. Rev. A 99, 022327 (2019) [Crossref]
• Guéry-Odelin et al., Shortcuts to adiabaticity: Concepts, methods, and applications
  Rev. Mod. Phys. 91, 045001 (2019) [Crossref]
• Fogarty et al., A many-body heat engine at criticality
  Quantum Sci. Technol. 6, 015003 (2021) [Crossref]
• W. et al., Controlling entanglement in a triple-well system of dipolar atoms
  Phys. Rev. A 108, 033313 (2023) [Crossref]
• Xu et al., Effects of coherence on quantum speed limits and shortcuts to adiabaticity in many-particle systems
  Phys. Rev. Research 2, 023125 (2020) [Crossref]
• Boubakour et al., Interaction-enhanced quantum heat engine
  Phys. Rev. Research 5, 013088 (2023) [Crossref]
• Pacyna et al.,
  , 1 (2022) [Crossref]
• Bougas et al., Analytical treatment of the interaction quench dynamics of two bosons in a two-dimensional harmonic trap
  Phys. Rev. A 100, 053602 (2019) [Crossref]